Stock line wearing element



- Feb. 28, 1939. H C PE 2,148,856

STOCK LINE WEARING ELEMENT Filed June 16, 1938 1750622507: #42040 COPE,

Patented Feb. 28, 1939 UNITED STATES PATENT OFFICE American Steel and Wire Company of New Jersey, a corporation of New Jersey Application June 16, 1938, Serial No. 214,096

3 Claims.

This invention relates specifically to improvements in the stock line zone of a blast furnace of otherwise conventional type, such as used in the manufacture of pig iron.

The specific features of improvement over the prior art will be readily apparent to those familiar with blast furnace construction from an examination of the following detailed description, the accompanying drawing and the appended claims.

In the drawing:

Figure 1 is a vertical, longitudinal section through the stock line zone of a blast furnace;

Figure 2 is a horizontal section thereof on the line 11-11 of Figure 1;

Figure 3 is a detached detail view of a wearresisting element constituting an improved article of manufacture adapted to be incorporated in the stock line zone of a blast furnace; and

\ Figure 4 is a vertical section on line IV-IV of 20 Figure 3.

The present invention is directed to the immovements in the stock line zone of conventional types of blast furnaces such as used in the production of pig iron. It is well known to those 25 skilled in the art that a conventional blast furnace consists of a lower hearth or crucible portion, a bosh thereabove, a shaft portion above the bosh and a stock line portion above the shaft.

The stock line portion is subject to constant wear, 30 due to the abrasive action of the charge as it shifts downwardly, and also to the destructive action of the gases which ascend through the furnace. My invention provides improved means for resisting the wear in the critical stock line zone 35 of the furnace, thus prolonging the time interval during which the furnace can be used in pig iron production.

In the embodiment of the invention illustrated the stock line zone of the furnace is indicated 40 generally at l and the upper extremity of the stack or shaft position is indicated at H. Other portions of the furnace are so well known to those skilled in the art that they are not illustrated.

The top of the charging platform of the furnace 45 is indicated at l2, and one of the gas off-takes is shown at IS. The furnace may have any suitable or conventional outer steel shell, such as indicated at II.

In my improved furnace, I provide a multi- 50 plicity of circumferentially arranged steel or other metal wear-resisting elements l5 whose upright inner-face portions I6 are preferably, although not necessarily, of arcuate form. Ex-

tending outwardly from the face portion of these 55 elements are upright legs I 1--l1, each of which is provided with an aperture I8 that the brickwork in the stock line portion may extend therethrough. As best shown in Figure 1, the multiplicity of wear-resisting metal elements are arranged in separate, vertically-spaced courses. 5 Thus, such a multiplicity of metal elements jointly constitutes a substantially or approximately continuous inner wear-resisting facing for the stock line zone of the furnace. The apertured legs of the wear-resisting elements provide means 10 whereby the brickwork may continue or extend in an unbroken manner therethrough. As thus arranged; all parts of each respective member, with the exception of its inner-face portion, is entirely surrounded by and bonded to the brick- 15 work. When the wear-resisting elements are incorporated in the brickwork of the furnace structure in the manner shown and described, it

is practically impossible for the same to become warped or distorted. The arrangement is such that the wear-resisting elements expand and contract in every direction with the brickwork, thus constantly keeping intact the bondbetween the elements and the brickwork.

The arrangement shown and described may be said to provide a non-warping stock line structure with wall plates incorporated therein which permit a major portion of 'the brickwork to extend continuously both horizontally and vertically, thus maintaining substantial continuity thereof in those directions. With such a nonwarping stock line construction as above indicated, the wear-resisting elements expand and contract in every direction with the brickwork, thus providing what may be specified as a full floating stock line structure efiective to prevent lining cracks.

The advantages which are inherent in the structure which embodies the invention herein disclosed and claimed have been demonstrated by actual reduction to practice.

While I have described quite specifically the embodiment of the invention illustrated, it is to be understood that various modifications may be made without departure therefrom, as defined in the appended claims.

I claim:

1. A blast furnace characterized by a novel stock line zone comprising a multiplicity of wearresisting elements incorporated in the brickwork, each of said elements having an inner upright lining portion and a pair of upright outwardly extending leg portions apertured to permit a course of brickwork to extend therethrough, thus providing an arrangement wherein the wearresisting elements are adapted to expand and contract in every direction with the brickwork and keep intact the bond between said elements and the brickwork.

2. A blast furnace characterized by anovel stock line zone comprising a. multiplicityof circumferentially arranged metallic wear-resisting elements 01' approximately U-shape as viewed in plan including outwardly extending legs and an inner face portion joining said legs, the legs being of substantially the same height as said face por-'' tion, said legs having apertures therein or a size to permit the brickwork to continue or extend in an unbroken manner therethrough, whereby said elements may expand and contract in every direction With the brickwork.

3. An article of manufacture adapted to be incorporated in the stock line zone of 'a blast furnace, comprising a metal element having an upright inner face portion and an upright leg portion with an aperture formed therein, which aperture is of a. size to permit brickwork of a. blast 1 furnace to extend therethrough. v

HAROLD COPE. 

